Ore-concentrating table.



PATENTED AUG ll. 1908,

E. DEISTER. ORE GONCENTRATING TABLE APPLICATION FILED MAR.1, 1906,

,UNITED sTATEs v4PATENT OFFICE.

EMIL DEIS'IER, 0F FORT WAYNE, INDIANA, ASSIGNOR T() THE MEISTER(JONLIIN'IRAIOR COMPANY, A CORPORATION Ol" INDIANA,

` i (DRECONGENTIS,.A'IJINGl TABLE.

Specification of Letters Patent.

Patented Aug. 11, 1908.

Application filed March 1, 1906. Serial No. 303,586.

To all 'whom it may concern:

Bc it known that I, EMIL DEIs'rEu, citizen of theUnited States ofAmerica, and resi ent of Fort Wayne, inthe county of Allen "nd State ofIndiana, have invented certain new and useful Improvements inOre-Concentrating Tables, of which the following is a specification.

This invention relates to improvements in ore concentrating tables, andthe object provide a table so proportioneil thereof is to Y and shaped,with means in connectlon therewith Which will direct the discharge ofmineral therefrom as the same becomes clean;

and also to elect the movement of overlying gangue at a broad angle fromthat in which the underlying mineral moves.

My object 1s accomplished by the construction illustrated in theaccompanying drawings in which .l

Figure i is a perspective view showing my improved concentrating tableand the particular arrangement of iifiies thereon; Fig. 2

breast-board 3 sides. v lble is of suitable material, such as lmoleum,

is a plan view showing the rhomboidal form of the table, the relation ofthe driving mechanism in connection-therewith, and the arrangement ofthe'riiles; and Fig. 3 is a sectional view ofthe table in a verticalplane adjacentto aiijd parallel with the breast board, showing the`relative heights of the riifles.

Similar numerals of reference indicate corresponding parts in bothviews, and referring now to the same: 1' is a concentrating table ofrilomhoidal form,`the length of which is approximately double that ofits width, and which has a head-board 2 at one end and a. projectingalong one of its 'lhe concentrating surface ofithe taand ranges in afiat plane throughout, except at the outer edge of the table at a pointimmediatelyadjacent the head-board where the linoleuincover 4 is heldina raised lposition by means of a wedge 5 which is inserted thereunder. Afeed hox' is secured tothe head-board 2 and overhangs the surface of thetable adj nt thereto.

It is the inte tion that the tableshall have differential recF .rocatingmovement in a line parallel with its ends, and suitable. drivingmechanism fi is arranged in connection there.- with to impart theretothe desired lateral motion.

The table is suitably mounted by any well known means, and. when inproper position' M' In the operi for use ranges upon a decline from itsendaat the head-board to its. opposite or tailings discharge end, andalso upon lateral incline from the breastdioard side to its opposite ormineral discharge side. At the lower end of the table are arranged atailings launder 8 `and middlings launder 9, and along the mine eraldischarge side of the table, beneath the corresponding edge thereof, isarranged a mineral lauudcr l() to receive the discharged concentratestherefrom.

A particular feature ol' this invention is the form and arrangement ofthe table in connection with the )articular arrangement and characterofriflfcs ll thereon: The rifilcs are all relatively parallel and arearranged later- ,ally upon'thc table or parallel with theends thereof.

Each rilile tapers from its inner end at the breast-board to a thin edgeat its outer end, but .the successive rillles, from vthe head-board tothe tailings discharge end of the table, gradually decrease in heightand project accordingly less from the correspomling surface of the tablealong the breast side thereof It will therefore appear that theprojection of the rililcs at the u )pereud ofthe table is greater thanthose at t 1e tailings discharge' end thereof, except that the rilllestaper to a uniform height at their outer ends. These riflles arearranged in succcssivefparallel series 12, 13, 14, and l5 respectively,the

end riflle 16 of cach series being of greater length than the otherrllllesandextending to the mineral discharge edge" '17 of the table. Theother riiilcs ofthe several series terminate u on the surface of thetable at points suita )ly distant from the mineral dischuge'edge 17 andthereby are provided vlong unril'lied washing surfaces 18, each ofwhichis separated from the adjacent washing surface hy thc outer extensionsof thel respective long rili'les 16. y,

tionof this invention the table is set in rapid'di'll'crentialoscillating motion laterally, andlorc pulp fed intofthc feed box fromwhence 'it passes onto the 'ad jacent surface of theftahlc. Becauseofthe longitudinal der-.line of the table, the pulp will move lengthwisethereon-to the lower end thereof,

and because of thev dilferential:motion and lateral-:incline of thetable, together with the riliies'', the mineralq'qortion of thepulpfwill be direeted from beneath the pulp out upon the washingsurfaces where it may be treated to the action of dressing 1lwatersupplied in any suitable manner. The extending long riiiles directthecleaned mineral from the correspending Washing surfaces to the mineraldis body of pulp as is commonly the case.

A feature of this invention is that the table is made rhomboidal and isactuated in a line parallel with its ends, and it shouldv appear thatthe lower en d of the table extends 'farther out in the direction of itsmotion than the upper' end thereof, so that the surface of the tableranges more or less in lin'e with the. tendency of movement of the bodyof pulp, viz: rl`lle pulp has a tendency to move at right angles to theline of motion be `anse of the longitudinal decline oi the table, and

to a more or less extent in liney with the motion of the table becauseof the differential action, and hence the movement ol pulp is somewhatdiagonal tothe line. oi motion of the table. Another feature of thisinvention is the gradual decrease in the height of the successiveriiilestoward thel lower end of the table. The riiiles thus arranged.' have theeffect of relieving the overlying gansrue so that the latter tends tomove at a broad angle. toward the lower end of the table away from thewashing surfaces. This eli'ects more perfect separation of theunderlying mineral from the overlying ganguc than where the angle ofmovement between the urulerlying mineral and overlying gangue is less.

'lhe form and arrangement of the table proper herein set forth issimilar to that shown in a previous application liled by me. lfeb. 19,1906, Sr. No. 301,728, but is distinguished therefrom particularly bythe arrangement of rifi'les. rihe table in the present instance isprovided with riti'ies arH ranged especially for grades of pulp coarserthan slimes.

Having described my invention, what l claim as new and desire to secureby Letters Patent is:

l. In a device of the class described, a reciprocatmg table having aprojecting Thus scarse breast-beard at its reanside; and parallelriii'les upon thetable arranged in similar successive groi'ips, the endrilie of each group being of greater length than the other rililes andextending from the breast-board to the mineral discharge edge of thetable," the other ritfiesbeing substantially of uni form lengtl'i, allof which commence their course at the breast-board and terminate atpoints suitably distant from the mineral discharge edge of the table,there being a washing surface along the mineral discharge edge adjacentcach group o'f rifiles, said 'ashing surfaces being separated -from oneanother b v the respective end rililes, all of said rillles beingtapered toward their outer ends, there being a uniform decrease in theheight of the respective riii'les at corresponding points successivelytoward the tailings discharge end of the table. 75

2. .ln a device of the class described, a recipro Iating table having aprojecting ln'east-bmu'd along its rear sidej` and a series of parallelrililes arranged upon the table in similar kgroups7 the end rifle ofeach group 80 being of greater length than the other riffles andextending from the breast-board to the mineral discharge edge ol thetable, the other rillles extending from the breast-board and terminatingat ioints suitably distant from the mineral disdharge edge, there beinga washing surface along the mineral discharge edge adjacent eaci groupof ritiies, the washing.surfaces being separated from one another by therespective end riiiles.

Chin a device of the class described, a reciprocating table having aprojecting ln'eastdioard along its rear side, and having also parallelriilles arranged in similar groups, the end rilile of each groupextending from the ln'east-lmard to the mineral discharge edge of thetable, and the other riilles extending vfrom the breast-board to pointssuitably distant from the mineral discharge ed e, there being a uniformdecrease in the heig t of the respective riiiies at corresponding pointssuccessively toward the low end of the table. j

in testimony whereof I ailiX iny signature, in presence, of twowitnesses.

1M IL DESTER.

